12016015555 has 16 divisors (see below), whose sum is σ = 14888749824. Its totient is φ = 9299975040.

The previous prime is 12016015541. The next prime is 12016015559. The reversal of 12016015555 is 55551061021.

12016015555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12016015555 - 2²¹ = 12013918403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12016015559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631237 + ... + 649993.

It is an arithmetic number, because the mean of its divisors is an integer number (930546864).

Almost surely, 2^12016015555 is an apocalyptic number.

12016015555 is a deficient number, since it is larger than the sum of its proper divisors (2872734269).

12016015555 is a wasteful number, since it uses less digits than its factorization.

12016015555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22926.

The product of its (nonzero) digits is 7500, while the sum is 31.

Adding to 12016015555 its reverse (55551061021), we get a palindrome (67567076576).

The spelling of 12016015555 in words is "twelve billion, sixteen million, fifteen thousand, five hundred fifty-five".